452 BRITISH BIRDS' NESTS. 



forehead and cheeks are not so pure a white ; 

 throat mottled with white ; black on back of head 

 occupies less space, and her back is tinged with olive. 



Situation and Locality. Similar in all respects 

 to those of the Pied Wagtail. 



Materials. Same as employed by last species. 



Eggs. Five to seven, of a wider colour variation 

 than those of the Pied Wagtail, according to Mr. 

 Dixon. The ground-colour varies from pure white 

 to bluish-white, speckled all over with different 

 shades of grey and brown ; sometimes a few hair- 

 like lines occur at the larger end. The markings 

 vary, both in regard to size and distribution, and 

 there can hardly be any safe means of identification 

 cipart from the difference in the parent birds. Size 

 about .8 by .6 in. (See Plate III.) 



Time. April, May, and June. 



Remarks. Migratory, but little is known as to 

 its comings and goings. Although a common bird 

 on the Continent, only a few well-authenticated 

 instances of its breeding in the British Isles are 

 on record, and those in the southern counties of 

 England. It is, however, thought that it may 

 often have been overlooked from the fact that its 

 general appearance and eggs are so similar to those 

 of the Pied Wagtail, to all except the practical 

 and experienced ornithologist. Notes : call, chiz-zit. 

 Local and other names : Grey and White Wagtail. 

 The male differs from the Pied Wagtail in being 

 grey on his upper-parts below the nape instead of 

 black, but the females of the two species only 

 differ in that of the White Wagtail being " pearl-grey 

 or very light ash-grey tinged with olive," and that 

 of the Pied Wagtail being " lead-grey mottled 

 with darker feathers " on those parts. 



